What is the best way to see if a row of data is within a JavaScript object.
I made a simple example down below.
data within appointment is the same as the first row of upcoming_appointments
upcoming_appointments = [{"DOB":"01-27-2002","name":"Judy, W." ,"PCD":"Dr-S"},
{"DOB":"08-15-1995","name":"John, V." ,"PCD":"Dr-C"},
{"DOB":"07-05-1992","name":"David, C.","PCD":"Dr-S"},
{"DOB":"01-15-2002","name":"Anna, S." ,"PCD":"Dr-J"},
{"DOB":"01-15-2002","name":"Jeff, D." ,"PCD":"Dr-P"}];
appointment = [{"DOB":"01-27-2002","name":"Judy, W." ,"PCD":"Dr-S"}];
if(upcoming_appointments.includes(appointment[0])){
console.log('true');
}
else{
console.log('false');
}
desired output
true
current output
false
JavaScript can't deeply-compare objects with equality operation.
You can achieve the desired result in a variety of ways, but the easiest one I can think of right now is by converting the objects to JSON strings and then comparing with the "stringified" version of your object.
// Function definition
function isRecordPresent(record, array) {
const jsonRecord = JSON.stringify(record);
const jsonArray = array.map(record => JSON.stringify(record));
return jsonArray.includes(jsonRecord);
}
// Implementation
isRecordPresent(appointment[0], upcoming_appointments);
In Node.js you can. There's a built-in Node module called util that brings a useful method for what you want: util.isDeepStrictEqual(a, b)
const util = require('util');
const objA = { a: 1, b: { a: 2, b: 3 } };
const objB = { a: 1, b: { a: 2, b: 3 } };
const objC = { a: 1, b: { a: 2, b: 4 } };
util.isDeepStrictEqual(objA, objB); // true
util.isDeepStrictEqual(objA, objC); // false
You'd have to compare objects' values as while they may look the same, they're different objects.
const upcoming_appointments = [{"DOB":"01-27-2002","name":"Judy, W." ,"PCD":"Dr-S"},
{"DOB":"08-15-1995","name":"John, V." ,"PCD":"Dr-C"},
{"DOB":"07-05-1992","name":"David, C.","PCD":"Dr-S"},
{"DOB":"01-15-2002","name":"Anna, S." ,"PCD":"Dr-J"},
{"DOB":"01-15-2002","name":"Jeff, D." ,"PCD":"Dr-P"}];
const appointment = [{"DOB":"01-27-2002","name":"Judy, W." ,"PCD":"Dr-S"}];
if(
upcoming_appointments.some(ua => {
for (let k in ua)
if (ua[k] !== appointment[0][k]) return !1;
return !0;
})
) {
console.log('true');
}
else {
console.log('false');
}